响水海域双峰谱型海浪的统计分析  

Statistical analysis of sea waves with double-peaked spectra in Xiangshui sea area

作　　者：高晨晨[1] 陈国平[1] 尹亚军[1] 

机构地区：[1]河海大学港口海岸与近海工程学院海岸灾害及防护教育部重点实验室,江苏南京210098

出　　处：《水运工程》2016年第3期23-28,共6页Port & Waterway Engineering

摘　　要：对收集到的响水海域实测双峰谱型海浪资料进行谱分析和统计分析,探讨了双峰谱型海浪的波高分布、周期分布以及波高与周期的联合分布,认为用单峰谱型海浪的研究成果来描述双峰谱型海浪已不再适宜,并根据响水海域实测波浪资料,提出了双峰谱型海浪的波高、周期的经验分布式。通过对双峰谱型海浪资料进行谱分析,计算了若干与谱宽有关的波谱参量,并与合田良实的实测结果进行对比。最后还对双峰谱型海浪的谱特征值与跨零特征值进行了比较,认为对于双峰谱型海浪,由谱法计算的有效波高与由跨零法计算的有效波高相差不大;而对于平均周期,谱法要略小于跨零法。The spectrum and statistical analysis are made of measured wave data with double-peaked spectra in the Xiangshui sea area. By investigating the wave heights probability distributions, the period probability distributions and the joint probability distributions of wave heights and periods of sea waves with double-peaked spectra,we know that sea waves with single-peaked spectra turn out to be not suitable for describing sea waves with double-peaked spectra. On the basis of measured wave data with double-peaked spectra in the Xiangshui sea area,we propose empirical probability distributions of wave heights and periods of sea waves with double-peaked spectra.Some spectral parameters related to the spectral width are calculated through spectrum analysis and compared with those of Godas field observation. Furthermore,the spectral characteristic values of sea waves with double-peaked spectra are compared with the statistical ones,and we find that there is only little difference between the significant wave height calculated by the spectrum method and the one calculated by the zero-crossing method; and the mean period calculated by spectrum period is a little bit smaller than that calculated by the zero-crossing method.

关 键 词：双峰谱 海浪 谱分析 统计特征 响水海域 

分 类 号：TV139.21[水利工程—水力学及河流动力学]